GAI-Tronics 701-905 SmartSeries Handset/Speaker Amplifier - Manual (Page 14)

Pub. 42004-685L2D
701-905 S MART S ERIES
®
H ANDSET /S PEAKER A MPLIFIER P AGE 13 of 15
f:\standard ioms - current release\42004 instr. manuals\42004-685l2d.doc
03/12
Fault Message Cause and Effect Possible Solution
Supervised Audio
Path
Speaker Voice Coil
Cause—The station is detecting no ambient
noise at the speaker or is detecting an ambient
noise lower than the configured failure
threshold. This may occur if there is a fault in
the speaker wire or a fault at the voice coil.
This also may occur if the ambient noise at
the speaker is too low, as is the case in a quiet
room.
Effect—The station continues measuring
speaker ambient noise. When acceptable
noise levels are subsequently measured, a
restore message is sent to the MCU.
 Verify that the speaker
wire is connected and
intact.
 Verify that the voice coil
is connected and intact.
 Replace the Speaker
Amp/Power Supply
PCBA.
 Replace Handset/FSK/P
PCBA.
Polled device Cause—This message is output by the MCU
when it loses communication with the station.
This may occur if there is a fault in the page
line, if the station is powered-down, or if there
is some fatal malfunction within the station.
Effect—The MCU continues to attempt
communication with the station. When
communication is resumed, a restore message
is sent to the MCU.
 Verify that the page line
is connected and intact.
 Verify that the station is
installed correctly.
 Replace the
Handset/FSK/ P PCBA.
Polled End-of-line
device
Cause—This message is the same as the
“Polled device” fault, except that the affected
station has been defined as an end-of-line
station in the MCU configuration.
Effect—When this fault occurs, the red EOL
FLT LED on the PPI bezel lights. When
communication is resumed, the LED
extinguishes and a restore message is sent to
the MCU.
 Verify that the page line
is connected and intact.
 Verify that the station is
installed correctly.
 Replace the station
assembly.